fixed target "help" in Makefile
@echo + all - Make bootrom, armsrc and the OS-specific host directory
@echo + client - Make only the OS-specific host directory
@echo + flash-bootrom - Make bootrom and flash it
- @echo + flash-os - Make armsrc and flash os (includes fpga)
+ @echo + flash-os - Make armsrc and flash os \(includes fpga\)
@echo + flash-all - Make bootrom and armsrc and flash bootrom and os image
@echo + clean - Clean in bootrom, armsrc and the OS-specific host directory